CN2644229Y - Apparatus for controlling trumpet volume by vehicle speed - Google Patents
Apparatus for controlling trumpet volume by vehicle speed Download PDFInfo
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- CN2644229Y CN2644229Y CN 03275988 CN03275988U CN2644229Y CN 2644229 Y CN2644229 Y CN 2644229Y CN 03275988 CN03275988 CN 03275988 CN 03275988 U CN03275988 U CN 03275988U CN 2644229 Y CN2644229 Y CN 2644229Y
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- speed
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Abstract
The utility model relates to a volume controlling device, relating to speed of a vehicle. The output end of a speed sensor (1) is connected with a speed-volume signal transducer (2), and the output end of the speed-volume signal transducer (2) is connected with a volume adjustable amplification circuit (3), with the output end connected with a loudspeaker (4). The speed-volume signal transducer (2) comprises a speed signal input unit, a speed signal maintaining unit, a comparative arithmetic unit and a volume control signal output unit. The units are connected with each other and are integrated in a single chip microcomputer. The utility model is arranged on motor vehicles, regulating volume automatically according to vehicle speed.
Description
Technical field
The utility model relates to speed-volume conversion control device, particularly a kind of device that is used for the speed of a motor vehicle control loudspeaker volume of self-propelled vehicle.
Background technology
At present, what use on automobile all is the accordatura loudspeaker, and volume and tone set in advance fixing when all being production, and this has just produced a series of problem.When the automobile low speed driving; for example travel in the biotope; bustling highway section; during the numerous occasion of personnel; too high horn trumpet volume tends to frighten the pedestrian; cause the environment of unnecessary noise and the quiet harmony of destruction; particularly for the needs of environmental protection; the regulation of horn-blowing control horn trumpet has been formulated and has been implemented in a lot of cities; " People's Republic of China's pollution from environmental noise is prevented therapy " the 35 also clearly stipulated: " city public security organ of the People's Government can be according to the needs of local city urban area protection of acoustic environment; delimit the highway section and the time of forbidding that power actuated vehicle travels and forbids its use sound device; and to society's bulletin "; but the horn-blowing control horn trumpet has also brought corresponding negative issue, as causing traffic jam easily; influence safety traffic to a certain extent; easy loss of automobile brake sheet or the like.On the other hand, when galloping, often in spacious locations such as countryside, express highways, because the horn trumpet volume is fixing, make its propagation distance far away inadequately, can make relevant pedestrian and other vehicle drivers can not get warning timely, also can influence the safety of traffic.If the volume of horn trumpet can be with the speed of a motor vehicle automatically regulating, the loudspeaker volume is little during low speed driving, loudspeaker give great volume when running at high speed, the problems referred to above all can be resolved so.
Summary of the invention
The utility model will solve existing automobile because its loudspeaker volume is fixed, the loudspeaker volume can not diminish automatically during low speed driving, produce noise emission, making on every side, personnel are much troubled, the loudspeaker volume can not become big automatically when running at high speed, other related personnel can not in time be warned, the problem of traffic accident takes place easily, speed of a motor vehicle control loudspeaker sound volume device of the present utility model is provided for this reason, its loudspeaker volume diminished automatically when this device can make the automobile low speed driving, and the loudspeaker volume becomes big automatically when running at high speed.
For addressing the above problem, the technical solution adopted in the utility model is to be provided with car speed sensor and loudspeaker, its special character is: the mouth at car speed sensor is connected with the speed of a motor vehicle-signal volume conv, the mouth of the speed of a motor vehicle-signal volume conv is connected with the adjustable power amplifier of volume, and the mouth of the adjustable power amplifier of volume is connected with described loudspeaker;
The described speed of a motor vehicle-signal volume conv is connected to form by vehicle speed signal input block, vehicle speed signal holding unit, comparison operation unit and volume control signal output unit in succession, vehicle speed signal input block wherein links to each other with car speed sensor, and the volume control signal output unit links to each other with the adjustable power amplifier of volume.
Described vehicle speed signal input block, vehicle speed signal holding unit, comparison operation unit and the volume control signal output unit of the described speed of a motor vehicle of formation of the present utility model-signal volume conv can be integrated in a micro controller system.
Described micro controller system is the micro controller system with high speed input channel and high speed delivery channel.
The adjustable power amplifier of volume described in the utility model is connected to form by multivibrator circuit, digital regulation resistance and audio power amplifier circuit in succession.
The utility model roller coaster speed sensors, the speed of a motor vehicle-signal volume conv, the adjustable power amplifier of volume and four parts of loudspeaker are formed.Car speed sensor as Hall element, photo-electric car speed sensor or magneto-electric car speed sensor, has configuration on existing most automobiles, and this sensor is according to the rotation speed output pulse vehicle speed signal of axletree.The speed of a motor vehicle-signal volume conv is handled the pulse vehicle speed signal of car speed sensor output, and different vehicle speed signal is converted to cooresponding volume control signal, output to the adjustable power amplifier of volume after, can realize controlling the purpose of loudspeaker volume.
The described speed of a motor vehicle-signal volume conv is made up of vehicle speed signal input block, vehicle speed signal holding unit, comparison operation unit, volume control signal output unit, realizes the translation function of pulse vehicle speed signal to volume control signal.Wherein the vehicle speed signal input block is converted to inner instantaneous vehicle speed signal to the pulse vehicle speed signal of car speed sensor output; Instantaneous vehicle speed signal converts stable vehicle speed signal to by described signal holding unit during loudspeaker are pressed, thereby avoids sending the speaker sound of not harmony; Described comparison operation unit relatively reaches the volume control signal that obtains can be used for regulating volume after the computing according to stabilizing speed signal and the segmentation speed signal that sets in advance, when the speed of a motor vehicle is low speed segment, export the volume control signal that can produce small volume; When the speed of a motor vehicle is high regime, export the volume control signal that can produce big volume; When the speed of a motor vehicle is relative middling speed section, export the volume control signal that can produce relative medium volume, the middling speed section can be divided into several grades, and as 3 to 5 grades, the different volume control signal of corresponding output is to produce different volumes; When the speed of a motor vehicle is zero-speed, export the volume control signal that can produce medium volume; Output to the adjustable power amplifier of volume by output unit at last.
The described speed of a motor vehicle-signal volume conv can be realized that the high speed input channel of micro controller system adopts the pulsewidth clocking method to measure the instantaneous speed of a motor vehicle, realizes the function of described vehicle speed signal input block by single chip microcomputer with high speed IO channel and peripheral circuit thereof; The high speed delivery channel utilizes its event loop to trigger function generation width and the cycle meets the pulse control signal that digital regulation resistance is regulated requirement, realizes the function of described volume control signal output unit; Micro controller system uses interrupt method to realize the function of described vehicle speed signal holding unit and comparison operation unit.
The adjustable power amplifier of described volume is made up of multivibrator circuit, digital regulation resistance and audio power amplifier circuit, the volume control signal of the described speed of a motor vehicle-signal volume conv output is received the adjusting port of digital regulation resistance, changes the equivalent resistance of digital regulation resistance; The input audio power amplifier circuit amplifies after the multivibrator circuit output harmonic wave signal process digital regulation resistance dividing potential drop, realizes regulating according to volume control signal the purpose of sound output.
Adopt digital current potential as regulating resistance in the adjustable power amplifier of volume of the present utility model, its precision is higher, and good reliability also adopts the device audio-frequency power amplifier in this power amplifier, and its horsepower output is bigger.
The utility model links to each other with car speed sensor owing to being provided with the speed of a motor vehicle-signal volume conv, being provided with the adjustable power amplifier of volume links to each other with loudspeaker, after so device of the present utility model is fitted to automobile, can change automatically regulating loudspeaker volume according to the speed of a motor vehicle, to adapt to automobile at the different speed of a motor vehicle and the needs under the environment.The small volume of running car loudspeaker when low speed segment can protect the pedestrian not get a fright, avoid unnecessary noise to pollute on the one hand, avoided also on the other hand that the no horn rule puts into effect that the back caused as problems such as traffic jams.Running car big volume of loudspeaker when high regime can guarantee that automobile audible warning when broad highway section, countryside, express highway etc. are located to run at high speed can be delivered to vehicle and the pedestrian in the safety distance that travelling, and has improved the safety of running at high speed.The normal quantity of automobile loudspeaker when zero-speed section (parking period) can satisfy the needs under situation such as meet with an accidet, needs are called the companion, arouse attention.Vehicle speed signal input block, vehicle speed signal holding unit, comparison operation unit and volume control signal output unit are integrated in the utility model of a micro controller system, its fast operation, good reliability.Apparatus structure of the present utility model is simple, and volume is little, and cost is lower, and installation and maintenance are all very convenient, the transformation that has automobile now also are easy to, in case place in operation will produce fairly obvious social benefit and economic benefit.
Description of drawings
Fig. 1 is a groundwork block diagram of the present utility model;
Fig. 2 is that the speed of a motor vehicle of the present utility model-signal volume conv is formed functional block diagram;
Fig. 3 is the adjustable power amplifier theory of constitution of a volume of the present utility model block diagram;
Fig. 4 is an example circuit functional block diagram of the present utility model;
Fig. 5 is the flow chart of maintenance with the conversion interruption of vehicle speed signal of the present utility model;
Fig. 6 is the adjustable power amplifier scheme drawing of volume of the present utility model;
The digital regulation resistance DS1669 scheme drawing that Fig. 7 adopts for the utility model.
The specific embodiment
Speed of a motor vehicle control loudspeaker sound volume device, have car speed sensor 1 and loudspeaker 4, mouth at car speed sensor 1 is connected with the speed of a motor vehicle-signal volume conv 2, the mouth of the speed of a motor vehicle-signal volume conv 2 is connected with the adjustable power amplifier 3 of volume, the mouth of volume is adjustable power amplifier 3 is connected with loudspeaker 4, as shown in Figure 1.Wherein, car speed sensor adopts Hall element; The speed of a motor vehicle-signal volume conv 2 is connected to form by vehicle speed signal input block 21, vehicle speed signal holding unit 22, comparison operation unit 23 and volume control signal output unit 24 in succession, these unit are realized by a micro controller system 80C196KC and peripheral circuit thereof, as Fig. 2, shown in Figure 4.Volume is adjustable, and power amplifier 3 is connected to form by multivibrator circuit 31, digital regulation resistance 32 and audio power amplifier circuit 33 in succession, as shown in Figure 3, Figure 4.
(1) car speed sensor
The present embodiment car speed sensor adopts Hall element.Hall element is installed on the output shaft of gear-box, produces the different frequency electric impulse signal that changes with the speed of a motor vehicle.When automotive wheel rolls, drive the rotating disk rotation, when Hall element is aimed at permanent magnet on cylinder, magnetic-field intensity strengthens, and produces Hall effect, and output voltage can reach 10mV, when Hall element during away from magnetic field, output voltage is reduced to 0V, can obtain the Hall impulse singla like this.The moving circle of output shaft of gear-box revolution sends eight Hall impulse singlas.When the speed of a motor vehicle improved, impulse rate increased, and on the contrary, when the speed of a motor vehicle reduced, impulse rate reduced.This impulse singla is delivered to the hsi port of CPU and is counted, and is used to calculate the speed of a motor vehicle.
(2) speed of a motor vehicle-signal volume conv
Speed of a motor vehicle signal volume conv is by micro controller system 80C196KC, electrically erasable read-only memory (EEROM) (EPROM) 27C256, data memory (RAM) 62C256, data latches 74LS373, clock crystal oscillator, reset circuit, and keyboard display etc. are partly formed.The CPU main frame adopts 16 micro controller system 80C196KC of INTEL Corp., this CPU fast operation, low in energy consumption, 8 tunnel 10 A/D conversion that inside is integrated, 6 the tunnel export HSO0～HSO5 at a high speed, and 4 the tunnel import HSI0～HSI3 at a high speed, external counting timer T2 and watchdog circuit (watch dog), greatly simplify the hardware system of system, improved the reliability of system.
This cpu circuit is realized the speed of a motor vehicle-volume translation function except being used to, can also be used for other purposes, for example, being used to export digital vehicle speed signal to digital speedometter shows, is used to obtain other motoring conditions and go control panel to show or the like that these functions must realize not within the discussion scope of this specification sheets after treatment.
1. vehicle speed signal input block
This unit is to utilize the high speed input channel HSI of 80C196KC micro controller system and the T2 time meter with quick incremental function, can adopt the pulsewidth clocking method to measure the instantaneous speed of a motor vehicle easily.The output signal of Hall element-Hall impulse singla is directly received on the hsi port pin HSI.0 of micro controller system 80C196KC.The high speed input channel of micro controller system can write down the time that the negative saltus step (or positive transition) of Hall pulse on the high speed input pin is taken place, and is designated as incident one time bear saltus step (or positive transition) at every turn, and the time difference between twice incident is exactly the cycle.According to the period measurement method, the number of record Hall pulse interval internal standard clock pulse can calculate speed of a motor vehicle size, and this speed of a motor vehicle is instantaneous vehicle speed signal.The Hall pulse count of sending is Z if axletree whenever turns around, and i pulse falling edge (positive rise) is t constantly
i, the cycle is T
i, use T
iCalculate mean speed and the conduct transient speed signals N at this moment of i pulse period
i, then:
N
i=60/ (Z * T
i), T wherein
i=t
I+1-t
i
The survey precision of system depends on pulse count Z and cycle t
iAccuracy of timekeeping.
2. vehicle speed signal holding unit and comparison operation unit
This two unit by using interrupt method realizes.
If instantaneous vehicle speed signal is directly used in control loudspeaker volume, its fluctuation may cause the inharmonious of volume.In order to address this problem, use signal remaining method to obtain stable vehicle speed signal.Received behind the on-off signal debounce of loudspeaker on the input pin P0.0 of micro controller system, detect the negative saltus step of this signal when micro controller system after, interrupting carrying out vehicle speed signal keeps and the comparison operation program segment, judge at first whether loudspeaker just were pressed, by judging a timer, if its timing time the authorized speed holding time with interior (5 or 10 seconds), think that then loudspeaker just were pressed, at this moment should not operate, directly jump out interruption, reach the constant purpose of holding signal.
If the speed of a motor vehicle holding time of the timing time overshoot of timer, can think that the sampling that need carry out a new round and volume regulate.Program is earlier to transient speed signals N
iSample, the stabilizing speed signal as current is designated as U.The stabilizing speed signal is through the cpu logic computing, corresponding relation according to different loudspeaker volumes under the different speed of a motor vehicle, finally obtain digital regulation resistance and regulate increment signal, and, be used to change the digital regulation resistance resistance by the UC pin and the DC pin of CPU high speed output pin HSO.0 and HSO.1 output high speed trigging pulse to digital regulation resistance.Corresponding relation and the adjustment method of conditioning signal Δ D that stabilizing speed signal U and CPU output to digital regulation resistance is as follows:
At first, be divided into zero-speed section (U=0), low speed segment (0＜U≤U speed of a motor vehicle U segmentation
L=, middling speed section (U
L＜U≤U
H=and high regime (U＞U
H), the middling speed section is further divided into third gear, low speed segment, middling speed section and high speed section in the difference called after, and the speed of a motor vehicle is divided into six grades like this.Regulate digital regulation resistance then to obtain different loudspeaker volumes, be divided into five grades, be followed successively by V according to the height relation
MAX, V
H, V
M, V
L, V
MIN, volume is measured and should be adopted special-purpose decibel meter, to satisfy the requirement of rules and environmental practice; The corresponding five grades of needed digital regulation resistance slip of volume gear D are designated as D
MAX, D
H, D
M, D
L, D
MIN, size 0～63, then the logical relation (referring to Fig. 5) between stabilizing speed signal U and the digital regulation resistance slip gear D is:
IF?U＝0 THEN?D＝D
M
IF?0＜U≤U
L THEN?D＝D
MIN
IF?U
L＜U≤[U
L+(U
H-U
L)/3] THEN?D＝D
L
IF[U
L+(U
H-U
L)/3]＜U≤[U
L+(U
H-U
L)×2/3] THEND＝D
M
IF[U
L+(U
H-U
L)×2/3]＜U≤U
H THEN?D＝D
H
IF U＞U
HTHEN D=D
MAXMaking the former slip gear of digital regulation resistance is D ', then can obtain the conditioning signal Δ D=D-D ' that CPU should output to digital regulation resistance, Δ D as be on the occasion of, then from D pulse of CPU high speed pin HSO.0 output Δ, to transfer the resistance of big digital regulation resistance; Δ D is as being negative value, then from D pulse of CPU high speed pin HSO.1 output-Δ, to turn the resistance of digital regulation resistance down; Be used for the computing of following one-period for D ' at last the D assignment.
3. volume control signal output unit
Utilize the high speed delivery channel output volume control signal of micro controller system.Utilize the high speed delivery channel of 80C196KC micro controller system can produce width and cycle and meet digital regulation resistance DS1669 and regulate the impulse singla that requires, this impulse singla requires to be not less than 1ms, and is no more than 1s.The function of high speed delivery channel HSO is in the predetermined a certain incident of time trigger, and the not intervention of CPU substantially, if incident repeats to take place, only needs the incident locking is got final product.HSO 8 incidents of can registering simultaneously comprise resetting timer T2 and four software timer signs etc. being set, and change the level signal on 6 output pins, and interrupt request can take place.Groundwork by the individual pulse regulation signal of high speed delivery channel HSO output Δ D (or-Δ D) is as follows, is example with HSO.0:
(3) the adjustable power amplifier of volume
The adjustable power amplifier of volume is made up of multivibrator circuit, digital regulation resistance DS1669 and audio power amplifier circuit, and circuit diagram is seen Fig. 6, wherein T
1, T
2Constitute a multi-vibrator.For keeping oscillation frequency stable, multi-vibrator is connected on the constant voltage power suspply, supplies with constant voltage power suspply, diode D by stabilivolt DZ1
1Temperature compensating as stabilivolt.The harmonic signal of multi-vibrator output is input to frequency power amplifying IC AN7172K by the dividing potential drop of digital regulation resistance DS1669, after phase compensation, driving and the power output through AN7172K, realizes finishing the purpose of control loudspeaker volume.Each pin function of AN7172K is: 1. inverse feedback I; 2.; 3. inverse feedback II; 4. input; 5. bypass; 6. power Vcc; 7. export II; 8.; 9. export I.
Digital regulation resistance wherein is the new device of available digital signal control potential device sliding end position, generally divides two kinds of push button control and serial signal controls.The utility model adopts the DS1669-10 digital regulation resistance of Maxim (U.S. letter) company, and its maximum resistance is 10K Ω, and 64 grades of adjustings are provided, and its pin and functional schematic are seen Fig. 7, and each pin function is: 1. R
H-high resistant end; 2. UC-raises button; 3. D-serial digital input pin; 4. R
L-low-resistance end; 5. power supply just; 6. DC-down button; 7. R
W-sliding end; 8. power-.The utility model adopts the push button control scheme, promptly by the control of the input pulse number on UC or DC pin R
HPin and R
LEquivalent resistance between the pin changes, and makes that this equivalence resistance is R
CR
CVariation regulated the input voltage of audio-frequency power amplifier, after amplifying, the loudspeaker volume is adjusted.
Claims (4)
1, a kind of speed of a motor vehicle control loudspeaker sound volume device that is used for self-propelled vehicle, have car speed sensor (1) and loudspeaker (4), it is characterized in that being connected with the speed of a motor vehicle-signal volume conv (2) at the mouth of car speed sensor (1), the mouth of the speed of a motor vehicle-signal volume conv (2) is connected with the adjustable power amplifier of volume (3), and the mouth of the adjustable power amplifier of volume (3) is connected with loudspeaker (4);
The described speed of a motor vehicle-signal volume conv (2) is connected to form by vehicle speed signal input block (21), vehicle speed signal holding unit (22), comparison operation unit (23) and volume control signal output unit (24) in succession, vehicle speed signal input block (21) wherein links to each other with car speed sensor (1), and volume control signal output unit (24) links to each other with the adjustable power amplifier of volume.
2, speed of a motor vehicle control loudspeaker sound volume device as claimed in claim 1, the described vehicle speed signal input block (21), vehicle speed signal holding unit (22), comparison operation unit (23) and the volume control signal output unit (24) that it is characterized in that constituting the speed of a motor vehicle-signal volume conv (2) are integrated in a micro controller system.
3, speed of a motor vehicle control loudspeaker sound volume device as claimed in claim 2 is characterized in that described micro controller system is the micro controller system with high speed input channel and high speed delivery channel.
4, speed of a motor vehicle control loudspeaker sound volume device as claimed in claim 1 is characterized in that the adjustable power amplifier of described volume (3) is connected to form by multivibrator circuit (31), digital regulation resistance (32) and audio power amplifier circuit (33) in succession.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275988 CN2644229Y (en) | 2003-07-09 | 2003-07-09 | Apparatus for controlling trumpet volume by vehicle speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03275988 CN2644229Y (en) | 2003-07-09 | 2003-07-09 | Apparatus for controlling trumpet volume by vehicle speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2644229Y true CN2644229Y (en) | 2004-09-29 |
Family
ID=34302241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03275988 Expired - Fee Related CN2644229Y (en) | 2003-07-09 | 2003-07-09 | Apparatus for controlling trumpet volume by vehicle speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2644229Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765350A (en) * | 2012-08-08 | 2012-11-07 | 江苏新日电动车股份有限公司 | Voice warning system for electric vehicle |
| CN103337022A (en) * | 2013-06-05 | 2013-10-02 | 袁义青 | A public transport electronic system |
| CN104760544A (en) * | 2014-01-07 | 2015-07-08 | 北汽福田汽车股份有限公司 | Vehicle radio volume automatic adjusting device, amusement system and vehicle |
| CN104960465A (en) * | 2010-03-25 | 2015-10-07 | 日本先锋公司 | Analog sound generating device and analog sound generating method |
| CN106218499A (en) * | 2016-08-25 | 2016-12-14 | 乐视控股（北京）有限公司 | Intelligent horn of vehicle device, control method and automobile |
| CN106314270A (en) * | 2015-06-30 | 2017-01-11 | 大星电机工业株式会社 | Sound generating system for environment friendly vehicle and a method for controlling the system |
-
2003
- 2003-07-09 CN CN 03275988 patent/CN2644229Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960465A (en) * | 2010-03-25 | 2015-10-07 | 日本先锋公司 | Analog sound generating device and analog sound generating method |
| CN102765350A (en) * | 2012-08-08 | 2012-11-07 | 江苏新日电动车股份有限公司 | Voice warning system for electric vehicle |
| CN103337022A (en) * | 2013-06-05 | 2013-10-02 | 袁义青 | A public transport electronic system |
| CN104760544A (en) * | 2014-01-07 | 2015-07-08 | 北汽福田汽车股份有限公司 | Vehicle radio volume automatic adjusting device, amusement system and vehicle |
| CN106314270A (en) * | 2015-06-30 | 2017-01-11 | 大星电机工业株式会社 | Sound generating system for environment friendly vehicle and a method for controlling the system |
| CN106314270B (en) * | 2015-06-30 | 2021-01-01 | 乐星汽车科技有限公司 | Sound generating system for eco-friendly vehicle and method of controlling the same |
| CN106218499A (en) * | 2016-08-25 | 2016-12-14 | 乐视控股（北京）有限公司 | Intelligent horn of vehicle device, control method and automobile |
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